Explanation:
The role of alcohol in DNA extraction is to precipitate DNA into a visible form. Also, it's used in DNA washing and storing
Answer:
Explanation:
The bacteria multiply rapidly, causing the appendix to become inflamed, swollen and filled with pus.
Action potentials (i.e. nerve impulses) occur in several types of animal cells<span>, called </span>excitable cells<span>, which include </span>neurons<span>, </span>muscle cells<span>, </span>endocrine<span> cells, and in some </span>plant cells<span>. </span><span>It takes around 40 action potentials for a smell sensation to be reported.</span>
After the completion of first trimester that is 8 weeks of conception, the baby is almost 1 inch grown. At this stage, the baby is referred as fetus. At this stage, all the organs as well as limbs becomes visible except for the sex organs.
The heart of baby beats rhythmically. Eyes and the eyelids are completely visible. Both the forelimbs and the hind limbs are formed, and fingers buds are also visible.
At this stage, the fetus looks like a human. The umbilical cord is also clearly visible at this stage.
Hence, the correct answer is 8th week.
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